elbow replacement device

Abstract

An elbow prosthesis comprising: a humeral component (119) including a plurality of condyles (118) having a plurality of humeral bushings (103), the plurality of humeral bushings (103 ) adapted to receive an articulation shaft (106) along an articulation axis (112); and an ulnar component (104), comprising an ulnar bearing (105) and an ulnar body (107), configured to be in a coupled state The lower mutual reciprocating coupling; the plurality of condyles (118) and the ulnar bearing (105) are configured to reciprocally engage each other around the hinge axis (112) in an engaged state; the ulnar bearing ( 105) includes an ulnar hinge hole (145); the ulnar body (107) includes an ulnar coupling hole (143), and the ulnar coupling hole (143) is along the hinge axis in the coupled state (112) is aligned with the ulnar hinge hole (145), the hinge shaft (106) is fixably attached to the ulnar coupling hole (143); the ulnar coupling hole (143) and the ulnar The articulation hole (145) is further aligned with the plurality of humeral bushings (103) along the articulation axis (112) in the engaged state for insertion of the articulation shaft (106). The elbow prosthesis can be used for total elbow replacement and allows a surgeon to select a joint or unjoint during the operation by utilizing a joint located on the body of the ulnar and / or humeral stem. restrictive. In addition, modularity also allows for the choice of a cemented or a non-cemented humeral stem as described herein. The modularity and adjustability provide many advantages.

Description

technical field [0001] The present invention relates to prosthetic joints, and more particularly, to an elbow implant system having an articular surface designed so that when the joint undergoes varus / valgus When rotated, a contact point between multiple components is gradually moved outward, and also includes a modular structure that allows the surgeon to select a number of different components according to the specific application and / or observation components. Background technique [0002] To date, joint arthroplasty is one of the most successful treatments for relieving pain and restoring function in patients with arthritis and a variety of other destructive joint problems. Hip and knee replacements are common, with more than 500,000 hip and knee replacements performed in the United States each year. The popularity of hip and knee replacements has been determined by the efficacy and durability of these types of joint replacements. For example, primary total knee arthr...

AI Technical Summary

Problems solved by technology

[0010] However, none of these devices allow intraoperative adjustment of soft tissue tension

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